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From: Juri Linkov <juri@linkov.net>
Newsgroups: gmane.emacs.devel
Subject: Re: Display window line numbers
Date: Tue, 06 Dec 2022 20:43:30 +0200
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> You could set `display-line-numbers' to 'absolute and run code below every
> time the window is scrolled up/down (e.g. with a hook):
>
> (save-excursion
>   (move-to-window-line 0)
>   (setq display-line-numbers-offset
>            (* -1
>               (line-number-at-pos))))

Thanks, adding this to `window-scroll-functions' displays correct
line numbers.  But only when the same buffer is not displayed
in two windows.